Waters Network Systems
User’s Manual
Page 27
GSM-2116 and GSM-2124
IP address:
Users can configure the IP settings and enter new values if the DHCP function is set to
Disable
.
Click the
Apply
button to update.
When DHCP is disabled, the default is
192.168.1.1
.
If DHCP is enabled, this field is completed by the DHCP server and the user will not be able to
manually set IP addresses.
Subnet mask:
The purpose of the subnet mask is to retrieve more network addresses. An IP device in a
network must own its IP address, composed of network address and host address; otherwise
communication with other devices cannot be made. The network classes A, B, and C are all too
large to fit for almost all networks, so the subnet mask is introduced to solve this problem. A
subnet mask uses some bits from the host address and makes an IP address look at the
network address, subnet mask number and host address. It is shown in the following figure.
This reduces the total of IP numbers that a network is able to support by the power of 2.
The subnet mask is used to set the subnet mask value, which should be the same value as that
of the other devices resided in the same network it attaches.
Default gateway:
Set an IP address for a gateway to handle those packets that do not meet the routing rules
predefined in the device. If a packet does not meet the criteria for other pre-defined path, it must
be forwarded to a default router on a default path. This means any packet with undefined IP
address in the routing table will be sent to this device unconditionally.
Default:
192.168.1.254
DNS:
The Domain Name Server is used to serve the translation between IP address and name
address. The switch supports DNS client function to re-route the mnemonic name address to
DNS server to get its associated IP address for accessing Internet. You can specify a DNS IP
address for the switch. The switch can translate a mnemonic name address into an IP address.
There are two ways to specify the IP address of DNS. One is fixed mode, which manually
specifies its IP address, the other is dynamic mode, which is assigned by DHCP server while
DHCP is enabled. DNS can help you easily remember the mnemonic address name with the
meaningful words in it. No assignment of DNS address is made by default.
Default:
0.0.0.0
32 bits
Network ID
Host ID
Network ID
Host ID
Subnet number